2018 Water Quality Report

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 soldotna

City of Soldotna’s
Drinking Water
Quality Report
For Year 2018

PWSID # 2241054

2018 DRINKING WATER QUALITY REPORT

 soldotna

 

We  are  pleased  to  present  this year's Annual Quality Water Report to our valued customers This report  is designed to inform you about the quality of the ground water and services we deliver to you every day. Our constant goal is to provide you with a safe and dependable supply of drinking water. Continual efforts are made to improve the water treatment process and protect our water resources. Copies of the Source Water Protection Plan are available at our office or public libraries. The Soldotna Utility Department continually strives to provide quality water by flushing the system every spring and cleaning the water  mains on an as needed basis. you have any questions about this report or about your water utility, please contact Kyle Kornelis, Public Works Director at 907- 262-9107.

Source Water Assessment (SWA) Reports have been completed by the ADEC Drinking Water Protection Program as a first step towards voluntary local source water protection efforts. Vulnerability rankings are assigned based on the susceptibility of the drinking water source to potential contamination, recent sampling results and the presence of potential contaminant sources - they do not necessarily indicate these contaminants will reach our source of water. Our water system has received the following vulnerability rankings: Completed  source  water assessments are  available at  ADEC's Drinking Water Protection  Program  website:  http://www.dec.state.ak.us/eh/dw/DWP/sourcewater.html, or  by calling 907.269.7521  or at 555 Cordova St, Anchorage  AK; or at the Alaska Resources Library and Information Services, 3150 C St, Anchorage, AK.

The City of Soldotna's public water system consists of four source intakes which are the following.

Well B - is a Class A water system. This water system  is located in Soldotna and the intake for this PWSID is a ground water well. The wellhead received a  susceptibility of "low" and the aquifer received a susceptibility rating of "high". Combining these scores produces a natural susceptibility of "low" for the source. In  addition, this water  system  has  received  a  vulnerability rating of "medium"  for bacteria/viruses, "high" for nitrates/nitrites, "high" for volatiles organic chemicals, "high" for heavy metals, "medium" for other organic chemicals, and "medium" for synthetic organic chemicals.

Well C - is a Class A water system. This water system is located in Soldotna and the intake for this PWSID is a ground water well. The wellhead received  a  susceptibility of "low" and the aquifer received a susceptibility rating of "medium". Combining these scores produces a natural susceptibility  of  "low"  for  the  source.  In  addition, this water system  has  received  a  vulnerability rating of "medium" for bacteria/viruses, "medium" for nitrates/nitrites, "high"  for volatile organic chemicals, "high" for heavy metals, "medium" for other organic chemicals, and "low" for synthetic organic chemicals.

Well C-2 - is a Class A water system. This water system is located in Soldotna and the intake for this PWSID is a ground water well. The wellhead received a susceptibility of "low" and the aquifer received a susceptibility  rating of "medium". Combining these scores produces  a  natural susceptibility of "low" for the source. In addition, this water system has received a vulnerability rating of "medium" for bacteria/viruses, "medium" for  nitrates/ nitrites, "high" for volatile organic chemicals, "high" for heavy metals, "medium" for other organic chemicals, and "low" for synthetic organic chemicals.

Well E - is a Class A water system. This water system  is located in Soldotna and the intake for this PWSID is  a  ground water well. The wellhead received a susceptibility of "low" and the aquifer received a susceptibility rating of "medium" Combining these scores produces a natural susceptibility of "low" for the source. In addition, this water system has received a vulnerability rating of "medium" for bacteria/viruses , "medium" for nitrates/nitrites, "high" for volatile organic chemicals, "high" for heavy metals, "medium" for other organic chemicals, and "low" for synthetic organic chemicals.

Arsenic: Arsenic is a naturally occurring mineral. Some people who drink water containing arsenic in excess of the MCL over many years could experience skin damage or problems with their circulatory system, and may have an increased risk of getting cancer. On February 22, 2002, EPA reduced the MCL for arsenic from 50 ppb to 10 ppb.

The table now reflects an MCL of 10 ppb for reporting purposes, which our system is currently meeting.

EPA's standard balances the current  understanding of arsenic's possible health effects against the costs of removing arsenic from drinking water EPA continues to research the  health effects of low levels of arsenic. Arsenic is a mineral known to cause cancer in humans when  it is in high concentrations  and, it is also linked to other health effects such as skindamage and circulatory problems. This continuing review may result in more stringent standards.

The City of Soldotna has been aware of (EPA's) study on arsenic and has met the arsenic levels deadline. As shown in the table above, all four of our wells are currently below the new 10ppb standard set by EPA.

2019 Water Operation Projects:

In our continuing effort to meet existing needs for high water quality we will be flushing the water mains in April and in September. We will also be performing some minor water distribution maintenance on W. Redoubt this summer. The work will include hydrant replacement and work on main line valves in the street. The city is also under contract with HDR to perform a source water study to review our current  and future needs.

To continue to maintain a safe and dependable water supply, improvements may need to be made the  existing water sys- tem  improvements   are   made,   future   rate   adjustments may  be  necessary  to implement these improvements.

We, at the City of Soldotna, work to provide top quality water to every tap. We ask that all our customers help us protect  our water sources, which are the heart of our community, our way of life and our children's future.

Contaminant

Sample Date

MCL

Violation

Level Detected

Units

MCLG

MCL

Likely Source of contamination to the best of our present knowledge

Well B (depth 163 ft.)

Combined Radium 226/228

11/14

No

2.24

pCi/L

0

5.0

Some people who drink water containing radium 226 or 228 in excess of the MCL over many years may have an increased risk of cancer.

Gross Alpha

11/14

No

ND

pCi/L

0

15

Certain minerals are radioactive and may emit a form of radiation known as alpha radiation. Some people who drink water containing radium 226 or 228 in excess of the MCL over many years may have an increased risk of cancer.

Arsenic

5/17

No

8.15

ppb

0

10

Erosion of natural deposits, runoff from or- chards, run off from glass and electronics production wastes

Barium

8/13

No

97.9

ppb

0

2000

Erosion of natural deposits

Well C (depth 247 ft.)

Combined Radium 226/228

11/14

No

1.68

pCi/L

0

5

See Well B above

Gross Alpha

11/14

No

ND

pCi/L

0

15

See Well B above

Arsenic

5/17

No

ND

ppb

0

2000

Erosion of natural deposits, runoff from or- chards, run off from glass and electronics production wastes

Barium

8/13

No

69.4

ppb

0

2000

Erosion of natural deposits

Well C-2 (depth 275 ft.)

Combined Radium 226/228

11/14

No

2.77

pCi/L

0

5

See Well B above

Gross Alpha

11/14

No

ND

pCi/L

0

15

See Well B above

Arsenic

5/17

No

ND

ppb

0

2000

Erosion of natural deposits, runoff from or- chards, run off from glass and electronics pro- duction wastes

Barium

8/13

No

84.4

ppb

0

2000

Erosion of natural deposits

Well E (depth 292 ft.)

Combined Radium 226/228

11/14

No

1.16

pCi/L

0

5

See Well B above

Gross Alpha

11/14

No

ND

pCi/L

0

15

See Well B above

Arsenic

5/17

No

8.44

ppb

0

10

Erosion of natural deposits, runoff from or- chards, run off from glass and electronics pro- duction wastes

Barium

8/13

No

72.3

ppb

0

2000

Erosion of natural deposits

Distribution System

Lead

9/18

No

3.76

ppb

0

AL=15

Corrosion of household plumbing

Copper

9/18

No

134

ppb

0

AL=1300

Corrosion of household plumbing

Halo Acetic Acid

5/18

No

20.7

ppb

0

60

By-product of water chlorination

Trihalome- thanes

5/18

No

69.4

ppb

0

80

By-product of water chlorination

Asbestos

11/13

No

ND

mfl

0

7

Erosion of the distribution mains

 

he City of Soldotna routinely monitors for contaminants in your drinking water according to Federal and State laws. The table to the right shows the results of our monitoring for the  period of January 1, 2018 to December 31, 2018, or the most recent monitoring results we have. As water travels over the land or underground , it can pick up substances or contaminants such as microbes, inorganic and organic chemicals, and radioactive sub- stances. All drinking water, including bottled drinking water, may be reasonably expected to contain at least  small  amounts  of some contaminants. The  presence  of  these contaminants does not necessarily indicate that the water poses a health risk. More information about contaminants and potential health effects  can be obtained by calling the EPA Safe Drinking Water Hotline (1- 800-426-4791) . Some people may be more vulnerable to contaminants in drinking water than the general population. lmuno-compromised persons such as persons with cancer undergoing chemotherapy, persons who have undergone organ trans- plants, people with HIV/AIDS or other immune system disorders , some elderly, and infants  can be particularly at risk from infections. These people should seek advice  about  drinking water from their health care providers. EPA/CDC guidelines on appropriate means to lessen the  risk of infection by cryptosporidium and other microbiological contaminants are available from  the Safe Drinking Water Hotline (1-800-426-4791 ).

Waivers and /or Non-Detects:   here are many regulations pertaining to sampling  and  monitoring  of  our  water  system  Since we had a waiver for Synthetic Organic Contaminants and other Organic Contaminants, we did not test for them during the time period covered by this report. We tested for numerous contaminates including total Coliform Bacteria, and all of  them  were below the maximum contaminant level goal.

In this table, you will find test results and abbreviations with which you might not be familiar.

  • Non-detects (ND) - laboratory analysis indicates that the contaminant is not present.
  • Parts per million (ppm) or milligrams per liter (mgl)- corresponds to parts per billion parts.
  • Parts per billion (ppb) or micrograms per liter(ugl)- corresponds to parts per billion parts.
  • Action Level (al) the concentration of a contaminant, which if exceeded, triggers treatment or other requirements, which a water system must follow.
  • Maximum Contaminant Level Goal (MCLG) is the level of a contaminant in drinking water below, which there is no known or expected risk to health.